| 摘要 |
The invention discloses a method for testing the integrity of at least one liquid filtering membrane consisting in filling the upstream air compartment (3) by placing it at atmospheric pressure and applying a partial vacuum in the said permeate compartment (4) so as to create a pressure differential between the said upstream compartment and the said permeate compartment; measuring, at the outlet of the said permeate compartment, the liquid flow rate corresponding to the air passing through the escape apertures under the effect of the pressure differential as well as the pressure prevailing in the said permeate compartment; after stabilising the measured pressure at a predetermined P test pressure, measuring the corresponding Q test constant liquid flow rate; assessing membrane integrity on the basis of the measured air flow rate Q test. The invention also discloses an installation for implementing the method. |
